I have a Gateway PII 350 with 128 RAM,19 inch monitor,ATI 3D RACE PRO 4 MB AGP VIDEO CARD and a 12 MB 3DFX VOODOO2 GRAPHICS ACCELERATOR CARD.When I have the main screen for Norton SystemWorks up and go over the 3D buttons with the mouse there is a block that is not 3D and not always in the same place. The buttons work the other screens work fine and the program works fine. I have the same problem with Mavis Beacon Teaches Typing 8 and 10 but they also will have a small square missing that lets my windows wallpaper show through. This program works fine also. There are no other related problems with any programs and every thing works.